Things to look into
http://www.odonohoearchive.com/tullig-house-castleisland-the-small-mansion/
Castleisland connection links –
https://www.irelandxo.com/ireland-xo/history-and-genealogy/ancestor-database/thomas-brosnan
http://www.odonohoearchive.com/tullig-house-castleisland-the-small-mansion/
The chute family also owned Tullig Housr in Castleisland …. And interestingly brosnans were in occupation in 1860 and still own it. connection?